Analysis on the State of Soil Erosion in Mineral-Resource Planed Areas in Sichuan Province

Based on Universal Soil Loss Equation and mathematics model and sensitivity analysis,this paper chose the spatial sensitivity of precipitation,physiognomy,soil,and vegetation as factors to establish the evaluating indicator system,then analyzed and forecasted the impact degree of soil erosion in 5 years.The results showed all of mineral resources exploit activities can be triggered soil erosion in 30-mineral-resource planed areas in Sichuan.The specific data as follows:10 of those present serious,16 moderate,4 slight.Finally,contrasted with index of spatial sensitivity of soil erosion in Sichuan province,the results of assessment is reasonable.